✉️Own the Send Button

Mailchimp sends marketing email and newsletters, with list management, templates, segmentation, automations and campaign reporting.

// TAKE · Listmonk is the right answer if you mainly send newsletters, being a single Go binary that handles large lists with good templating while you supply your own SMTP or SES credentials. Mautic is the closer match to Mailchimp's marketing automation side, with drip campaigns, lead scoring and landing pages, but it is a heavy PHP application that needs real maintenance, and Keila sits in between for small teams who want something simpler to run.

SendGrid provides transactional and marketing email delivery over an API and SMTP, with templates, analytics and deliverability tooling.

// TAKE · useSend is the closest drop-in for the transactional half, offering an API and SMTP relay you can point at your own SES or SMTP backend, with hyvor-relay a leaner option when you only need the sending API. Listmonk covers the campaign side better than any of them, but be honest about the trade-off: none of these projects inherit SendGrid's IP reputation, so warm-up and deliverability become your job.

Resend is a developer-focused email API for transactional and marketing mail, with React email templates and delivery analytics.

// TAKE · useSend is the nearest thing to Resend in shape, an API plus dashboard for both transactional and broadcast email that you can self-host or use hosted, and Plunk covers the same ground with a friendlier campaign editor. Listmonk is excellent but is a newsletter and subscriber engine rather than a transactional API, and hyvor-relay is the option if all you actually want is your own SMTP and sending infrastructure.

Postmark delivers transactional email over SMTP and an API, with per-message tracking, templates and a focus on deliverability.

// TAKE · useSend is the closest to Postmark's developer experience, an API plus a real delivery dashboard, but it rides on AWS SES so deliverability is Amazon's reputation rather than a curated transactional network. hyvor-relay actually sends the mail itself, which means you own IP warm-up and blocklist trouble, and Plunk is only worth it if you want marketing broadcasts in the same tool.

Mailgun provides transactional and bulk email sending over API and SMTP, with routing, deliverability tooling and analytics.

// TAKE · useSend and Plunk are the practical picks, but both sit on top of AWS SES rather than sending mail themselves, so you get Mailgun's API and dashboard without owning the IP reputation. hyvor-relay is the choice if you want to run the delivery stack yourself, and Sendune is really a template builder and SES front end rather than a full platform.

Brevo combines email marketing, SMS, transactional sending, a light CRM and marketing automation in one hosted platform.

// TAKE · Mautic is the only project here that really matches Brevo's marketing automation, with contact scoring and multi-step campaigns, at the cost of a heavy PHP stack to keep running. Listmonk and Keila are far simpler newsletter senders, and Dittofeed sits in between with event-driven journeys but no CRM or SMS.

Klaviyo runs ecommerce email and SMS marketing with behavioural segmentation, automated flows and revenue attribution.

// TAKE · Mautic is the only one here that seriously covers the automation side, with segments, drip campaigns and lead scoring, but it is heavy to host and its ecommerce integrations take work. Listmonk is dramatically faster and simpler for sending large campaigns yet has no flow builder, and Keila sits between them as a manageable self-hosted newsletter tool.

Kit (ConvertKit) is an email marketing platform for creators, with newsletters, landing pages, tagging and automated sequences.

// TAKE · Listmonk is the workhorse if your main need is sending large newsletters cheaply through your own SMTP or SES, but it has no landing pages and only basic automation. Dittofeed is closer to the sequences-and-segments side of the product with proper journey builders, while Keila is the gentlest to self-host for a plain paid newsletter.

ActiveCampaign combines email marketing, CRM and marketing automation with visual workflow builders, lead scoring and segmentation.

// TAKE · Mautic is the only project here genuinely trying to replace ActiveCampaign, with contact scoring, campaign builders, landing pages and basic CRM, though it demands real maintenance effort and its UI shows its age. Plunk is much simpler and handles event-driven lifecycle email well, while Listmonk and Keila are newsletter senders with no automation or CRM to speak of.

MailerLite provides newsletter and email marketing with a drag-and-drop editor, subscriber segmentation and basic automation.

// TAKE · Keila is the nearest feel-alike, with a friendly campaign editor, double opt-in and GDPR handling built in, so non-technical marketers can run it. Listmonk is the better engine if you send hundreds of thousands of messages and do not mind a more utilitarian UI, while Sendportal is worth a look only if you are already on Laravel and sending through SES.

Loops sends marketing and transactional email for software companies, with event-triggered sequences, segments and analytics.

// TAKE · Plunk is the closest fit, because like Loops it treats transactional and marketing email as one system driven by product events rather than two separate tools. Listmonk is far more mature and handles very large lists efficiently but is campaign-oriented with no real event triggers, and useSend is the leaner developer option when you mostly want an API over your own sending setup.

Campaign Monitor sends design-led email marketing campaigns and newsletters, with list segmentation, basic automation and reporting.

// TAKE · Keila is the closest fit for a Campaign Monitor user, a self-hosted newsletter tool with a usable campaign editor, signup forms and segments, aimed at marketers rather than sysadmins. Listmonk is dramatically cheaper to run at large list sizes but its editor and automation are basic, and Mautic is worth the considerable maintenance burden only if you need full marketing automation.

Sendinblue runs email and SMS marketing campaigns, transactional sending and marketing automation from a single dashboard.

// TAKE · Dittofeed is the closest in spirit because it models user journeys and segments rather than one-off blasts, which is what Sendinblue is actually sold on. Listmonk is far faster and simpler for large newsletter sends but has no automation builder, and Plunk is the pragmatic middle ground when you want transactional and marketing email behind one API.

Moosend is an email marketing platform for newsletters, segmented campaigns, landing pages and automated drip sequences.

// TAKE · Listmonk is the workhorse, a single Go binary on Postgres that will push millions of newsletters, but it has no real journey builder. If Moosend's automation flows are the part you are replacing, Dittofeed is the closer match, while Keila is the gentlest option for a small newsletter run without an ops team.